The Eclipse “Organize Import” Feature (Cntr+Shift + O) allows to automatically import the packages which are used in a program. If there are several options Eclipse suggests all available classes and the user has to select the right one.
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If you are working mainly with SWT the fact that Eclipse does also suggest java.awt and javax.swing classes can be annoying.
To prevent this you can add a “Type Filter” under Windows -> Preferences -> Java -> Appearance -> Type Filters. Then these classes are not suggested anymore.
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Type Filter